If you're a hardcore GTA player and you're attempting to fully complete GTA4 with 100% completion, then this checklist is just what you need. Having just earned 100% completion myself, I can be almost positive that this list covers every single objective required.

Currently we have a checklist with all of the objectives. You can tick off the ones you have or print off the list and mark them as you do them, however very soon I will be adding a special feature to the checklist which will allow you to save your checklist on our website, meaning you can constantly update your progress whenever you're on the site. This should be completed in the next week, but I'll keep you updated.

Check out our GTA4 100% Completion Checklist, and if you have any feedback, error corrections or have any problems with it whatsoever, please post here and let us know.

We'll also be adding plenty of new guides to the site which will assist you in completing the various objectives required, so stay tuned!

There are no extra unlockables or rewards for doing anything apart from the friends.

Well, after you complete the 30 text message cars, you're able to take any cars you steal to the garage and you'll be paid for them, but that's not really an unlockable.

I read somewhere that you get a helicopter for 200 pigeons, but I never read anything in game, or saw anything that showed that was the case.

I don't even think you get anything for 100%, although I did notice that [spoiler]the ammo limiter seems to have been disabled, meaning you can buy as much ammo as you like and go on an endless killing spree![/spoiler]